23. Visitors don’t have to clean their rooms at a hotel. The cleaners do it.
24. You must get permission to invite friends in your room.
25. The students mustn’t drive on campus. It’s forbidden.
26. You must pay the rent. That’s the rule.
27. I’m afraid you can’t go out now. It’s too late.
28. He has to do his homework every day.
29. You look ill. You must to go to the doctor.
30. People must stop at the red line. It’s the rule.
31. Students mustn’t put posters on the walls. It’s forbidden.
32. You can't have party here. It isn’t allowed.